BitcoinDigital began as a WordPress crypto-news magazine and was rebuilt from the ground up into something leaner and more useful: a focused suite of German-language Bitcoin calculators at bitcoindigital.de.
Its flagship is a holding-period calculator that determines, to the exact day, when a Bitcoin sale becomes tax-free under § 23 EStG — computed precisely per §§ 187/188 BGB rather than the imprecise “365 days” most tools assume.
The toolkit
- FIFO tax calculator — applies first-in-first-out across multiple purchases, shows which portion of a sale is tax-free, checks the per-year Freigrenze, and answers how much can be sold tax-free as of today.
- DCA savings-plan backtest — what a recurring monthly investment would be worth now, computed on real historical month-end prices.
- Lump-sum backtest — the value today of a one-off investment made on any past date.
- Satoshi converter — instant conversion between satoshi, bitcoin and euro at the live price.
- Transaction-fee estimator — current network fees in sat/vByte and euro from live mempool data.
- Withdrawal calculator — how long a given Bitcoin stack lasts at a chosen monthly withdrawal.
- Halving countdown — blocks and estimated date until the next Bitcoin halving.
- Top-10 history — which coins have survived in the crypto top 10 since 2014.
Every result can be shared as a link or added to a calendar. Technically the site is the opposite of its predecessor: plain HTML, CSS and vanilla JavaScript — no framework, no build step, no tracking. It loads instantly, respects privacy by design, and runs at near-zero maintenance on Cloudflare.
| Status | Live |
| Availability | https://bitcoindigital.de |
| Name | BitcoinDigital |
| Genre | Utility / Bitcoin Tax & Calculator Suite |
| Subsidiary | – |
| Time-to-Market Effort | ≈20h to MVP (supervision, review & product decisions — implementation AI-orchestrated) |
| Maintenance | Near-zero by design; quarterly data refresh |